Shadow God Slayer

A wealthy young heiress loses everything when her family is struck by disaster and becomes an ordinary person. To get revenge, she offers herself as the price, and falls for the assassin who helps grant her wish. A vast conspiracy takes shape, and the two embark on a love story marked by painful partings and the threat of death as they search for the truth. But when the assassin sacrifices himself to save the world, the heiress sets out on a journey to bring her beloved back to life...